Half to job c



. l UNITED STATES PATENT OFFICE.

D. EANDoLPH KINYON, E EAEITAN, NEw JE'EsEY, AssicNoE oE ONE- HALE ro'JoB c. KrNYoN, oE sAME PLACE.

FRICTlON-CLU'I'CH.

SPECIFICATION formlig :9331"6` Of Letters Patent N0. 281,700, dated July 24, 1883. Application filed May 11, 18E3f (No model.) 4 Y i y friction-clutch which shall presenta large ures.

frietional surface at such points as shall give the greatest leverage and require the slightest relative movementof the principal elements involved.

The mechanism employed and its construction and operation will be hereinafter described,

and the novel features thereof specifically set forth in the claims.`

Referring 4to the 'accompanying drawings, forming a part hereof, Figure l is a side elevation, and Figs. 2 and 3 a longitudinal and transverse section, respectively, of a clutch constructed in accordance with my invention.

Like letters refer to l--ike parts in all the iig- A represents a shaft, which may be designated as the driving7 shaft, and B aseparate shaft, herein vdesignated the driven shaft. To the driving-shaft is keyed, or otherwise secured so as to rotate therewith, a pulley, G, which constitutes one of the principal elements of the clutch. To the vdriven shaft B is, in like manner, secured a disk,D, which is provided with (in this instance three) slots d, through which bolts epass loosely, each being provided with a shoulder, e', against which its nut abuis. to prevent binding lengthwise in the slots. These bolts serve to connect to the disk D two half-rings, E, in such manner that they may move radially in and out upon the disk, and thus be caused to bear upon or be held away from the periphery of the pulley C. y

Each of the halffrings is provided with lugs f f f f', the former bored vertically and the latter transversely, the first tovreceive suspension rods or bolts f2, hanging from an eccentric shaft, F, mounted in the second series of lugs. The lower ends of the rods f2 are screw-threaded and provided with nuts f3, to take up undue looseness of the half-ringsaoc'- casioned by wear or otherwise.

A lever, F', projects from the eccentric and is connected by a link, G, to a sliding collar, H, mounted on the shaft B. Said collar is annularly grooved, as shown, for the reception of any well-known operating-lever.

The operation is apparent. Motion, being given to the shaft A, is conveyed to the pulley C, fixed thereon. Now, Vif the collar H is moved toward the disk D, the lever F is raised and the eccentric rotated, so as to depress the upper half-ring E and raise the rods f2 and the lower half-ring E suspended thereon, thus bringing both half-rings toward each other and firmly upon the periphery of the pulley G, and bythe friction of these parts uponeach other the motion is conveyed to the disk D and the shaft B, to which Vit is fixed. I

By this construction a slight movement is required in the half-rings, and hence I am enabled to employ the limited but exceedingly powerful movement of an eccentric clamping 'or wedging device, as F, and the surface contact is of such a nature and form as to create great friction without un due strains in the parts in use. y v

If desired, the shaft A may be continuous,

in which case the disk D would be loosely mounted thereon, and provided with or conlnected to any suitable belt-pulley to drive any desired mechanism.

Having described my invention and its operation, wha-tl claim as new, and desire to secure by Letters Patent, is-

1. In a friction-clutch, a driving-shaft and a driven shaft,'a disk carrying half-rings, and an eccentric adapted to force said half-rings 'upon the periphery of a pulley mounted upon thedriving-shaft, in combination with bolts carried upon the ends of the eccentric shaft and take-'up nuts, substantially as specified.

2. The' combination ofthe shaft A and a pulley, C, with the shaft B, disk D, slottedas at d, bolts e, half-rings E, provided with lugs, rods f2, eccentric F, and means for its rotation, substantially as shown and described.

3. The combination of the pulley C, the eccentric shaft F, rods f2, and take-up nuts f3 with clamps E, substantially as and for the purpose described.

' In testimony whereof l affix my: signature in presence of two witnesses.

D. RANDOLPH KINYON.

Vitnesses: Y

L. K. VEEDENBURGH, A. H. DAYTON.4

VSo

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